Fastener inserting machine



April 18, 1933.

S. L. GOOKIN FASTENER INSERTING MACHINE Filed July 21, 1950 Fig? 1.

8 Sheets-Sheet l A ril 18, 1933. s. GOOKIN FASTENER INSERTING MACHINE 8Sheets-Sheet 2 Filed July 21,

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A ril 18, 1933. I s. L. GQQKBN LQMfiQQ FASTENER INSQERTING MACHINE FiledJuly 21, 1930 8 She'iSwsheiet 3 new if April 18, 1933. s. GOOKIN IFASTENER INSERTING MACHINE Filed July 21, 1950 8 ShQGtSr-ShGGt 4 DEADCENTER LINE OF TOGG-LE o 7 LIMIT OF RETRACTION FOR INSERTING LIMIT OFRETRACTION i FOR PUNCHING m F6 mmm mm wa m P u LE N mw w m LWW c DWELLFOR FEEDING April 13, 1933- s. L. G OOKIN FASTENER INSERTING MACHINEFiied July 21, 1950 8 Sheets-Sheet 5 April 18, 1933. 600m. 1,904,306

FASTENER INSERTING MACHINE Filed July 21, 1930 8 Sheets-Sheet 6 II II IIApril 18, 1933.

S. L. GOOKIN FASTENER INSERTING MACHINE Filed July 21, 1950 8Sheets-Sheet 7 Filed July 21,- 195?) 8 Sheets-Sheet 8 1g: 2 2

Wei/0311M pendently of the other.

Patented Apr. 18, 1933 UNITED STATES PATENT c erics SYLVESTER LEO.GOOKIN', OF QUINCY, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERYCORPORATION, OF PATERSON, NEW JERSEY, A CDRPO RATION OF NEW JERSEYApplication filed July 21,

This invention relates to fastener-inserting machines and is hereinillustrated as embodied in a duplex machine designed to insert twoeyelets simultaneously in two confronting elements of work such as thequarters of a shoe-upper. It is to be understood, however, thatin someof its aspects the invention is not limited to eyeleting machines nor tomachines for operating on shoeuppers, or even to machines of the duplextype. Nevertheless, for purposes of eX- planation, the illustratedmachine will be described in terms commonly used in referring t'o'dnpleXeyeleting machines.

Regarded generally, the invention aims, among other things, to improvethe organization of duplex fastener-inserting machines with regard tohigh speed, smoothness and quietness of operation, efiicient applicationof power to the parts that operate under lieavy'stresses, and facilityin effecting substitutions of interchangeable raceway assemblages. V I

Machines of the duplex type'are commonly provided with two groups ofelements for punching fastener receiving holes in the work and forinserting and upsetting fasteners-in the holes so punched. Each of thegroups comprises a punchingdevice and a fastener-inserting devicearranged side by side, and a hammer for operating those devicesalternately. The punching device and the inserting device are shiftedlaterally, first to place the inserting device in register with the holemad-e by the punching device, and thereafter to feed the work so'thatthe successive fasteners of-a series'will be suitably spaced one fromanother.- v

In. some former machines in Which an operating hammer acts first on'apunching device that cooperates with a solid punch-bed and thereafteracts on afastene'r-inserting device, no provision has been made forregulating the strokes of thesedevices each inde- Consequently, toprovide for. such regulation insome other former machines each hammerhas been provided with two individually adjustable strikers, one for thepunching device and the other for the fastener-inserting device.

FASTENER INSERTIN' G MACHINE 1930. Serial No. 469,432.

that type is illustrated in United States Letters Patent No. 934,066,granted September 14:, 1909 on application of George Goddu.

Although a construction of that kind will operate withsatisfactoryresults when the parts are new or not'badlyworn, the offsetrelation between one of the strikers "and the device operated therebydevelops considerable side thrust of that device "against the bearingmember in which it slides, and also develops a skewing tendency of thedevice, both of Which wear away the guiding surfaces unevenly and causeloose play between the worn device and its guiding member before themachine is otherwise seriously alfected by wear. I VVi'th a'vie'w toeliminating this cause of excessive wear, Without sacrificing provisionsfor individually regulating the strokes'o f' a punching device and afastener=inserting device, an object of the present invention is toprovide an improved construction that will do away with forming alateral projection on either of the devices and permit a commonoperating member such as a striker'to act alternately on the two devicessubstantially at the center line of each device.

Accordingly, an improvement constituting one feature of the presentinvention consists in a novel combination in which a punching device anda fastener-inserting device an ranged'si-de by side are bothengagedcentrally by a common operating member such as a hammer and are shiftedlaterally to and fro to be operated alternately by that member, the saiddevices being provided with centrally located and individuallyadjustable heads bywhich their respective strokes maybe regulated. I VWhen a punching device and a fastenerinse-rting device are individualand separate from each other, as in machines of the type underconsideration, 'a relatively short stroke su ffices for the punchingdevice, whereas a sidesof its dead-center position.

longer stroke is required by the inserting device because this devicehas the additional duty of detaching the fasteners from a raceway andinserting them into the work.

Hence, to favor high speed and ease of operation the present inventionalso provides improved mechanism by which unnecessary motion of adouble-duty operating member is eliminated. This result is obtained inthe illustrated machineby causing less retraction of a double-dutyoperating member after the fasteneninserting stroke of that member thanafter the punching stroke thereof, and by limiting the retractorymovement of the punching device so thatthis device will clear theoperating member when the latter is at the terminallimit of its shorterretractory stroke.

Another object of the invention is to provide improved hammer-operatingmechanism. In machines that utilize one doubleduty hammer to operateboth a punching device and a fastener-inserting device the hammer isrequired to execute two operating strokes in each cycle. With thatcondition as the basis of a problem that also involves the applicationof considerable power to operate the hammer against heavy resistances,an effective solution of the problem is provided by a form of operatingmechanism that may be termed a double-throw toggle-mechanism. Thedoubl'e throw effect of the illustrated toggle-mechanism is obtained byreciprocating a toggle element across and to opposite Consequently, eachstroke of such range of the toggle-element causes one operating strokeand a reverse stroke of the part or parts operated thereby, and so itfollows that one corresponding reciprocation of the toggleelement causestwo reciprocations of the operated part or parts. Therefore, to utilizesuch a mechanism consistently with the aforesaid purpose ofreciprocating a doubleduty operating member such as a hammer withstrokes of two lengths, a feature of this invention consists inproviding a doublethrow toggle-,mechanism arranged to travel a greaterdistance to one side of its deadcenter position than to the other.

The illustrated machine comprises a raceway to which fasteners are fedfrom a hopper and by which the fasteners are delivered to thefastener-inserting means. In factories that use such machines to insertfasteners of different styles, colors or sizes, it is commonly necessaryto change from one kind of fastener to another several. times each day,but,

to avoid the inconvenience of removing the unused fasteners from oneraceway-and-hopper unit and substituting fasteners of another kind inthe same unit, it is common to provide a plurality of interchangeableraceway-and-hopper units stocked with different kinds of fasteners andto substitute one such unit for another whenever a change of fastenersis necessary. In making these substitutions, it has heretofore beennecessary to disconnect the raceway-operating mechanism from araceway-and-hopper unit before detaching that unit from the machine andto connect the operating mechanism to the substituted unit afterattaching the latter to the machine.

lVith regard to the conditions last mentioned, still another object ofthe present invention is to save time and simplify the procedureincidental to attaching and detaching raceway-and-hopper units.

To this end a novel feature of the present invention consists inproviding a detachable raceway and the raceway-operating mechanism of afastener-inserting machine with cooperative interlocking elements formedand arranged to be cooperatively coupled by the act of placing theraceway in cooperative relationship to the fastener-inserting means ofthe machine. As herein shown, the coupling elements mentioned embodytongue-andgroove formations arranged to be coupled by moving the racewaysidewise into its cooperative relationship with the fastener-insertingmeans.

Various improved features embodied in the illustrates means forsupplying fasteners to the fastener-inserting mechanism constitute thesubject-matter of my application Serial No. 552,698, filed July 23, 1931as a division of this application.

The illustrated machine also embodies various other features ofinvention hereinafter described and set forth in the appended claims.

Referring to the drawings,

Fig. 1 is a left-side elevation of a duplex eyelet-inserting machineconstructed in ac cordance with this invention;

Fig. 2 is a right-side elevation on a larger scale of the principaloperating mechanisms, the view being squared relatively to the sheet forconvenience in making the drawings;

Fig. 3 is a view similar to Fig. 2 but omitting some of the elements inthe foreground of Fig. 2 to show more clearly certain elements in thebackground;

Fig. 4 is atop plan view, partly in section,

I of the principal elements included in Fig. 3;

Fig. 5 is a top plan view of an operating connection forming a part ofthe mechanism shown in Fig. 4; V

Fig. 6 is a diagrammatic view of a doublethrow toggle mechanism anddouble-duty hammers for operating the punching devices and thefastener-inserting devices;

Fig. 7 is a chart of the motions imparted to one of the hammers by themechanism shown in Fig. 6;

Fig. 8 is a sectional View indicated by line VIIIVIII of Fig. 3

Fig. 9 is a left-side elevation of the punchthee in. F st c;

'e 1 a d T e 17 a We i w .s aring includediniF-ig. the plane of Fig. 1720,199, V if' lfig 18: is a left side elevation, partly in mosses a 3its dier i se the feetn rri ertins d v and el mei tei l ely relet d' h tI Fig. 10 is a frontelevation of theassem- Eisll s. per p t e iew t E jut: able-Mel f we kkno n on ru i 1 rr ies duplex edg -eas a d P e e e ei2 a; ong tudinal ct on o ,th' up r Pun hing de i c. is-

s el n t i a se t n th upper. ast n e t device 1f ig. l4 is a top planview, partly in section; regulatable wojrkefeeding mechanism;

. f Fi raise horizontal' sectionalview of m gSrfor adjnstingthe unitshown 'in Fig. 11. v v

i i indi ated by line XVII+XVII3 eeti e o upl y l erp s dup raceway andrelated operating-'mechanisms;

v B dg 1:9 isa topplan; view projected from Fig. 18 showing a portion ofthe raceway n mechanism: fo p at ng he l y cnd thereof Fig. Ois a topview, partly insection, of

latching device by Whichthe racevvay'may te eblySe r t th frame o hmachin liig, 21 is avz sectional View in a vertical plane of thestructureat the glovver right Fig. 1B 1 Big. 22; is a vertical; sectionthrough the iheppe in a pl n n c ted by line X F- XX onF g- F g. 23isja' vievv showing the'hopper in elevation and the; raceway in cro-sssection E sel8$a r 1 F-ig; 24' 's,a vertical sectional view of thehopper in plane extending from front to rear; nd. v

Fig; 25s a perspective vievfof the'upper portion of oneof two similarlinks for operating the hopper brushes, respectively. v

" Referring to "Fig.- l the machinecomprises a, hollow main frameopengat the frontv and/formed with a, flat base 21 adapted to hel i 0hfl h, .(i1t 0'W 7,1316 ra 20 provided with a stationary' horizontalshaft 22 on which twofidle pulleys, 'one represented at '23, are'mountedto guide a driving 'belt 24to; a receiving pulley forming a partofadisconnectible clutch the pulleys V 23- and 25-being enclosed inthe-frame 20,

was

and the base 21- having an opening through which-the belt extends. i

T0 facilitate assembling the mechanism, the main frame 20 is -preferablyformed to receive 1 a l detachable, unit. comprising upper and' loiver.'bealring'in'einbers7 26; a cam shaft 27 r] ournaled;therein, a rod 63by WhichEthe ,meiiilbers 26, are rigidly connected, rand v va- ..ri o,usother elements carried by the rod as Well as those carried by the-camshaft. ,Accordngly, the right-hand side of the frame 20 is provlded witha hinged section 28 which may be opened to permit the insertion andremoval of the detachable unit. The bearing members are aflixed to themain f ame 20 by bolts 29 (see Figs. 2 and I I p Any suitable type ofclutch maybeused to operate the cam shaft 27 but I prefer a clutch "ofthe type shown and (lESCTlbGCliD United St-ates Letters PatentNo.-"1,351,138; granted offthis type of clutch are Well known, the" de-August '31, 1920, 'onfapplication of R". B. finmth. Since theconstruction and operation tails of construction are not herein shovvn.

For the purposes of the present description it villbe sufficient-tostate that the clutch is provided 'Witll a controlling member "30 (Fig.l) which may be connected to treadle (not-shown) and which controls theclutch as retracted against th'e stress ofa springfihe driven oortion ofthe clutch andthecamshaft 27 are picked up and rotatedby the continu-'ously' rotating pulley 25, the coupled relation ,7

continuing until the cam shaft reaches apiedetermined angular positionin any cycle 'du r ing which "the coi'itrolling member 30 is re leasedby the treadle.

structural features "of themachine; the fol lowing outline of thegeneral modeof operation Will be in the lnterest of a clear under- Whenthe controlling 7 member 18 released it first unouples the driv follows.When the controlling member V V standing. 'A pair of opposed punchingdevices and. a pair of opposed fastener-ins ert"- ino devicesarearrangedto be shifted laterall y to and from acommonoperating-locality. The punching devices stand initially in registerWlth said locality and are operated first to punch holes in twoconfronting elements of Work such as the quarters of a shoe upper. Whenthe punching devices have been operated and retracted both pairs of,devices'are shifted to vthe re ar, thereby placing 'thefastener-inserting' devices in register Witlrtho punched holes, the Workremaining stationry. 7 The inserting devieesare now operated to transfereyelets from a duolexrac'evva to c .v i Y H the Workfand to upset andclench the eyelets The inserting devices in the punched holes. dwellagainst the eyelets just clenched Whilev they are movedlatrally to feedthe vvork, and they are thereafter retractedfrom-the clenched eyeletsand are returned to their initial positions the punching devicesalso're;

T as

turning to their initial positions at the common operating locality.

Punching devices Each punching device comprises a plunger 31 and atubular punching tool 32 carried thereby (see Fig. 12). These punchingdevices are arranged in opposed relation to each other as shown in Figs.9 and 10. They are guided toward and from each other and are shiftedlaterally by a duplex head or carrier 33 in which two coaxial bores areformed to receive them. The outer end of each plunger 31 is bored andtapped to receive a bolt 34 which constitutes an adjustable head, alock-nut 35 being placed on the shank of the bolt to maintain the headat any desired position of adjustment. This adjustment is ers31.

Referring to Fig. 9, the punching tools 32 cooperate with oppositesurfaces of a dupleXpunch-bed 40. The chips or pills of Waste materialformed by the punching tools pass through the tips 32 and are dischargedthrough the sides of the plungers 31 which are provided with ducts 41 inregister with discharge openings 42 formed in the head 33.

Fastcner--inserting devices The two fastener-inserting devices arelikewise mounted in the head 33 in opposed relation to each other. Eachof these devices comprises the features of construction shown best inFig. 13. The plunger 43 of each inserting device is arranged to slide ina bore formed in the head 33 and is provided with an annular groove orseat 44 at its inner end to receivethe flanged end of an eyelet. Aspindle 45 normally projects from the seat 44 to pick an eyelet from araceway and to carry the eyelet to a hole punched in the work. Acompression spring 46 contained in a bore in the plunger normallyprojects the spindle 45 but permits the spindle to be repressed duringthe upsetting and clenching operation. Backing for the spring 46 isprovided by a bolt 47 screwed into the outer end of the plunger, thebolt also constituting an adjustable head against'which one of theaforesaid hammers acts to operate the inserting device. The bolt 47 alsoconstitutes means for regulating the operating stroke a lock nut 48 tomaintain it inany desired position of adjustment.

Since each fastener-inserting device is provided with an adjustable bolt47 to receive the blow of the hammer, the construction provides foreasily and quickly altering :the conditions of operation according tovarious thicknesses of work. Forexample', the accessories for eachmachine may include'a plui rality of pairs of fastener-inserting devicesof the type illustrated, one pair for operating on thin Work, one pairfor operating on thick work, and one or more pairs for operating on workof intermediate thickness, the 3 bolts 47 of each pair being adjustedwith regard to the particular thickness of work upon which that pair isto be used.-' Thus, when it becomes necessary to shift from work-of onethickness to work of another thickness,- the operator has merely todetach thepair of fastener-inserting devices then in the machine andsubstitute another' pair invvhich another condition of regulation ismaintained by the bolts 47 and the lock-nuts 48. The twofastener-inserting devices are retracted by spring-stressed meanscomprising levers 49 and a tension spring 50 connecting the levers.These levers are mounted on the fulcrum studs 38 and their outer endsare provided with laterally extending pins 51 which extend through slots52 formed in the head 33 and project into recesses 53 formed in theplungers 43. The retractory movements of the spring-stressed levers 36and 49 are limited bystops 180 carried by the head 33. The insertingdevices coop- 'erate with a duplexfclenching [anvil 54 mounted adjacentto the punch-bed-40. The punch-bed 40' and the'clenching anvil 154 aremounted side by side in a tongue 55 aifixed to the head 33 and arrangedto project between two confronting elements of'work.

The head 33 is movable from front to rear and is also'inovable from sideto side, the first ofthese movements being utilized to place thefastener-inserting devices in'register with the holes punched in thework" by the punching devices, while the other movement is utilized tofeedthe work. For these purposes, the head 33 is mounted on acarriage 56(Fig. '9) to which it is connected by a pivot pin 57. The carriage 56'is arranged to slide first to the rear and then to the front on twostraight parallel guide rods 58. The ends of these rods are mounted insockets formed in the frame 20, The car,- riage 56 is reciprocated bymechanism comprising two cooperative cams 59 and 60 (Figs. 3 and 4), abell-crank lever 61, cam rolls carried by the lever and engaging saidcams respectively, and a link 62 (Fig; 9) connecting the lever and thecarriage The lever 61 is mounted on the rod 63 which 1 of the'insertingdevice and is provided with serves as a fulcrum for a series of camlevers likewise mounted thereon. As previously stated herein the rod 63rigidly connects the removable bearing pieces 26. The pivot pin 57connecting thehead 33 and the carriage 56 provides for angular movementofv the head for the purpose of feeding the work. 7

Referring to Figs. 1, 2,3, 4, 9 and 10, the machine is provided with astationary duplex work-support 64' and with two presserfeet ,65 arrangedto cooperate with opposite,

surfaces thereof to clamp two confronting elements of work. Theconstruction and arrangement ofthese parts are substantially similar tothose illustrated in United States Letters PatentNo. 1,030,833, grantedJune 25,1912 on application of F. A. Rumney. Moreover, as shown in Fig.11 the presserfeet 65 are carried by leaf-springs 66 an chored to abifurcated block 67 of wellknown construction by which duplexedgegages-68 are provided to straddle the tongue 55 in whichthe'punch-bed and the clenching anvil are imbedded. The block 67 also Jrstraddles the stationary work-support 64 and is affixed thereto, by aclamping screw 69 (see Fig. 3). The work-support 66 is affixed to a.bar- 70 (Fig. 10) provided with rackteeth '71 (Fig. 9), onits uppersurface. A

,- pinion 72 meshes. with the rack-teeth for the purpose of adjusting.the support 64 to the front and rear, the edge-gages 68 being there-' byadjusted toregulate the distance from the guide edges. of the workelements to therows i of inserted eyelets- The rack-bar 70 hastongue-and-groove connection with a guiding fixture .73 (Fig. 10)attached to the frame 20. The adjusting pinion 72 is pinned on acylindric stem 74 journaled in a fixed bearing sleeve 7 5. A knob 76 isprovided for turning the stem 74. I

Figs. 15,16 and 17 illustrate aform of gearing by which fine incrementsof rotation may be imparted to the pinion 72 by the knob 76. The knob isarranged to turn on a pro-.

jectingportion of the fixed sleeve 75 and is formed with a centralrecess 170 and with a nonacentral recess 171. The recess 170 enclosesasun-gear 172 and a driven gear17 3.

These gears are of substantially the same diameter but one'of them isprovided. with one more tooth than the other. The teeth of bothof'thes-e gears are engaged by a planet ary pinion 174 carried by theknob76 and arranged in the recess 171, the ends of this pinion beingturned downto provide trunnions, one of whichis journaled in the backwall of the knob and the other of which is journaled in a detachablecover-plate 176 secured to the front of the knobby screws 177. As-theknob is turned, the planetary pinion rolls around the sun-gear 172 andproduces relatively slight turning of the driven gear 173. The lattergear is. formed on one end of the, stem 74 which transmits the resultantrotational novement to the pinion 72.

'7 Work-feeding mecham'm 4 Referring to Figs. 9and- 14 the pivotallymtunted head 33 has an articulate connection with an arm 77 by whichltlSVOSClllltQCl about the pin-57 to feed theqwork. ,The connectionbetweenthe head and the arm is formed by a swiveled block 78 mounted onthe head andv arranged in a slot 79 formed in the feeding arm. The longdimension of the slot 79 is parallel tethe shifting motion imparted tothe head by the carriage 56. The arm 77 is mounted to oscillate abouta'fixed axis parallel to the axis of the'pin 57, the fixed axis beingprovided by a pivot member 80 con-' necting the rearend of the arm 77 toa boss formed on the frame 20. When the parts are in their-initialpositions, as shown in Figs.

byt-he cam shaft 27. These cams are engaged respectively by cam ro-lls83 mounted on a bell-crank lever 84, the lever being oscillatedpositively in both directions without lost motion. The rod 63constitutes the fulcrum for the lever 84. V I

Themotions of the lever 84 are transmitted to the feeding arm 77 byawell-known formof regulatable mechanism of the type illustrated anddescribed in United States Letters Patent No. 683,488,.granted October1, 1901 on application of M. H. Pearson. This mech-- anism provides forvarying the length of the oscillations imparted to the arm 77 althoughthe amplitude of the oscillations of the bellcrank lever 84remainsconstant. Two links."

85'and 86 are pivotally connected to the lever 84 and tothe .arm 77respectively and they are also pivotally connected to each otherby apivot pin 87 which extends through a radius arm 88 (see Fig. 2). Theradius arm is mounted on a manually movable regulator 89 towhich it isconnected by a pivot pin 90. The regulator 89 is mounted on a pivot stud91 affixed tothe frame 20 and is movable about the axis of that stud toshift the pivot pin 90. When the parts are in their initial positions,as shown in the drawings, the axis of the movable pivot pin 87 coincideswith the axisof thefixed pivot stud 91. Consequently, the initialposition of the feeding arm 77 is not affected by movement of theregulator 89, but the travel of the connecting links 85 and 86. ismodified by shifting the fulcrum pin 90 of the radius arm 88, with acorresponding increase or decrease in the length of travel communicatedto the feeding arm 77. The regulator 89 overlies a stationary'sectorplate 92 in which a series of holes 93 are formed to receive stop pins94. These pins may be placed in any desired holes and spaced apart topermit angular movement of the regulator between any de- Y mers.

crum plns 97 which rock 1n bearings 98 1n the striker.

sired limits according to the requirements of the work. A. torsionsprlng 95 (Fig. 14) normally mamtams the regulator 89 against one of thepins 94 as shown in that figure.

H ammer mechanism The punching devices 31 and the fastenerinsertingdevices 43 are operated alternately by two levers 96 hereinafter termedham- The hammers are mounted on fulframe 20 (see Fig. 4). The forwardend of each hammer is provided with a hardened steel block 99 whichconstitutes a head or Each hammer operates first a punching device andsubsequently a fastenerinserting device, the two devices being shiftedalternately into register with a common operating area of the strikingsurface of the hammer by the reciprocatory movement of the slidingcarriage 56 (see Fig. 9).

TVhen the parts occupy their initial positions, the punching devicesstand in register with the heads of the hammers while the o rfastener-inserting devices stand in front of the hammer heads and clearthem. On the other hand, after the punching devices have been operatedby the hammers and when the head 33 has been shifted to the rear, as

iereinbefore described, the fastener-inserting devices stand in registerwith the hammer heads while the punching devices stand behind the hammerheads and out of the operating range thereof. Cavities 100 are formed inthe hammers at the rear of-the heads 99 to receive the outer ends of thepunching devices when the fastener-inserting devices are in registerwith the hammer heads, the cavities insuring clearance of the punchingdevices so that the hammers may operate the fastener-inserting deviceswithout engaging the punching devices. I

The invention provides improved mechanism for operating the hammers 96twice in each cycle, this mechanism embodying a duable extent, ofreactionary stresses that normally tend to create friction and wear ofthe parts. 7 I

Referring to Figs. 3 and 6, the rear ends of the hammers 96 areconnected by pivoted toggle links 101 to a slide 102 which constitutesthe knee of the toggle. The links 101 are connected to the hammersbypivot pins 103 and are connected to the 'knee 102'by pivot pins 104. Theslide 102 is mounted on and guided by the guide rods 58 and is arrangedat the rear of the sliding carriage 56 which is also mounted on theserods.

The slide or knee 102 is reciprocated positively in opposite directionsby two cooperative cams 105 and 106 (Figs. 1, 2 and4). These camsengage, respectively, cam rolls 107 and 108 carried by a bell-cranklever 109 'mounted on the fulcrum rod 63. The lever 109 and the slide102 are connected by a pivoted link 110 (Fig. 5). Thus,'while the guiderods 58 maintain the knee or slide 102- in a fixed path of travelbetween the hammers 96 the outer pivots 103 of the toggle both movetoward and from each other. Under these conditions the toggle mechanismis doubleacting, since each toggle linkoperates one of the hammers, butthe resistance encountered by each of the hammers reacts through thetoggle links 101 and the'knee'102'to the opposite hammer, therebyrelieving the guide rods; 58 from the heavy stresses crosswise thereof.

Fig. 6 illustrates diagrammatically successive positions of the kneepivots 104, while Fig. 7 illustrates corresponding motions imparted tothe head of one of the hammers. It isto be understoodthat the motions ofthe other hammer head are similar to, but the reverse of, thoserepresented in Fig. 7.

Referring to Fig. 6, the parts are shown in their initial positions. Thecenters of the knee pivots 104 are representedby small circles A, B, Cand D at successive positions in' their paths of travel. Assuming thatthe knee pivots stand initially at positions A and that a cycle ofoperations is about to be executed, these pivots are carried first toposi tions B. Tn moving from A to B, the knee pivots are carried acrossthe dead-center line of the tog le which is represented by a dot b uand-dash line 1n this figure. Since the punching devices stand initiallyin register 7 with the hammer heads 99 they will be operated while theknee pivots 104 progress from positions A. to the'dead-center line, andthe work elements lying against opposite ends of the punch-bed 40 willbe completely punched to provide fastener-inserting holes.

The travel of the knee pivots 104 from A to B is continuous, inconsequence of which the hammer heads are immediately and fullyretraeted after having caused the punching devices to function. It is tobe observed that the travel of the knee pivots from the deadcenter lineto B is greater'than the travel though the hammerlheads 199stand'initially movement the knee of the toggle .is advanced to move theknee pivots from C'to'D :(LFig. 1 6), the heads of the hammers beingtherebyv retracted far enough to-clear-theouter ends I ing movementimpartedto thehead oritool v v l proved ,mea'ns :for supplying eyeletsto the fastener-inserting devices 43. Y The illustrat atintermediatepositions between their two limits of motion'they areretracted to their outer-limits of motion when the knee ipivots are atB. See the left-hand arrow in 'Fi'gz'fl which represents the'firstmotion of they head of the upper-hammer. The hammer heads are thusretractedfar' enoughto clear the fastener-inserting devices which "arethereupon shifted into register with them. The

retracting levers 36 (Fig. :9), as well' asthe" levers 49, now lie.against the stops 180.,rand the punching devices are thereby retractedfar enough to clearthe raceway. s The knee 102 is next shifted in thereverse direction to carry the pivots 104 from B to C where-they dwell'whilesthe feeding of the work takes place. In traveling from-2B to thedead-center line, the pivots 104 cause the hammer; heads to operate thefastener-inserting devices, the slight travel ofthe knee pivots beyondthe-dead-center line to result ing in a'very slight retraction See thesec- 0nd arrow from the left :in Fig. 7.: This slight retractionrelieves the pressure-ofthe inserting devices against the fasteners:which have now been inserted. and completely. upset or clenched, but isnot suflicient to disengage these devices from the fasteners. Referringto Fig. 10;, the heads 99 of the hammers have lateral dimensionssufficient to maintainthe inserting devices against the clenched:fasteners throughout the maximum work-feeds:

carrier 33. Q

At the completion of work-feeding the punching devices which in themeantime have been ma ntained at their outer V limits o-fretraction bythe stopslSOtFig; 9).

*i in the paths of the retracting levers '36. The

hammersare thus retractedito, intermediate positions indicated bythethirdfarrow from the left in Fig. 7 and-are maintainedin thosepositions-while the carriage 56 moves-fors- I ward-to shiftthepunching'devices again'into register with the hammer heads. 1W hilethis shifting is taking place the inserting devices which have. beenonly partially retracted, are shifted out ofsregi'ster with; thehammerheads andare-thus released so that they may be returned to their outerlimits of retrac- "tory motion by'their' retracting. springf50. -At thispoint the retracting levers 49- are arrested in their'initial positionsby the stops v In themeantime, the work-feeding mechanism returns toitsinitial position-and the. knee 1020f the toggle moves toward therear, thereby carrying the :knee pivots 104 from Dto A. This lattermovement of thetoggle knee causes the heads at the zhannners to advancea :short distance .as indicatediby the .r 'ight hand. arrowin Fig. 7.The cycle of the toggle mechanism is completed Wh'en'the mot-ionlastdescribed .has .caused. a slight movement 1 of the punching devicestoward eachother. It will be understood that when the reparation of themachine continues through a series -:of cycles without. interrup= tion,:the kneepivoits 104 will: travel from D to :13 without interruption atA-except inthe final cycle of each-series whenthe-knee pivots willbearrested at Art Thuspwhen the machin'e-is arrested with the parts intheir initial positions, the punching devices are advanced ypartlwaythrough. their travel towardthe' punchblock and are sufficientlyclosetojan article of Work to indicate to the operatorwhethersthe .workis initially placed- '3 The; present invention also provides img edfastener-supplying means comprises a du pleixiho'pper 115 (Figs..l and.18) and axdus ple'X racewayynthe individual divisions of whicha-reiindicated at 116 and 117 respectively. These elements and others bywhichthey 'are connected and braced constitute a detachable unitWhichmay berea'dily mount ed on "the frame'20 and detached therefromWith'Veny little loss of time. Consequently, a plurality of "detachableraceway units containing eyelets :of different sizes, different colorsor other characteristics maybe read-ir'ly interchanged: in accordancewith ments of successive'lots of work.

' The divisions-.116; and 117- f of the i'aeeway are parallel to eachother-except their upper portions which'diverge upwardly,lthe

parallel portions being rigidlyconnected -to the require:-:

tener-insertin'gv 5devices, whereas ?the upper section and the hopperarestationary, The two sections have-ah articulate pivotal connectionwhich includes a coupling mem ber designed to cooperate. with a.omplem'en tal coupling member permanently "attached to the frame 20 andforming a part of the operatingv mechanism by which the delivery end ofthe raceway is moved to and fro;

The construction is such that .the act of mounting any one of aplurality of detachable raceway unitson the means provided for thatpurpose also results in coupling the movable section of the raceway tothe raceway operating mechanism, no additional actor operation beingrequired to establish the desired connection or relation of the movablesection and the operating mechanism.

The raceway is supported in its operative position by two parallel dowelstuds 120 projecting horizontally from the left-hand side of the frame20. The two spacing blocks 118 are bored to receive the'dowel studs asshown in Fig. 20. Interconnected latches 121 mounted on the frame 20 andconnected thereto by pivot pins 122 are arranged to snap over outeredges of the blocks 118 and thereby maintain the raceway firmly againstthe frame 20. The latches are connected by a tension spring 123 whichmaintains them normally in latching position. The latches are alsoconnected by a pin-and-slot connection 124 whereby the movements of oneare communicated to the other. A knob 125 is formed on one of thelatches to provide convenient means by which the latches may beretractedto release the raceway.

The pivotal joint by which the stationary section and the movablesection of the raceway are connected comprises coaxial pivot pins 126and 127 (Fig. 21). The axis of these pins intersects the channels 128 ofthe two divisions of the raceway (see Fig. 19) but the pins are spacedapart to clear the lower division so that the eyelets in that divisionmay cross the axis of the joint without interference. A spacing block129 interposed between the two divisions of'the movable section of theraceway is connected to the adjacent stationary block 118 by the pivotpin 126, while a reinforcing block130 affixed to the lower side of themovable section is connected to a stationary reinforcing mem her 131 bythe pivot member 127. The blocks 129 and 130 and the two divisions ofthe movable section are all rigidly clamped to each other by bolts'132,while the reinforcing member 131 is affixed to the stationary sectionofthe raceway by screws 133.

-The pivot pin 127 is pinned to the block 130 and is utilized tocommunicate oscillatory motion to the movable section. For this purposea radially extending tongue 134 is formed on the lower end of thispivotmember. The tongue 134 constitutes one element of an interlockingtongue-and-groove coupling, the complemental groove of which is formedin a head 135 of a rock-shaft 136. Therock-shaft is journaled in a boss137 formed on the frame 20 and is provided with an arm 138 by which itmay be oscillated. I

replenishmentof the two series.

The mechanism for operating the movable sectionof the raceway. is shownin Fig.19. A cam 139 carried by the cam shaft 27 cooperates with acam-roll 140 carried by a lever 141. The lever is mounted on the fulcrumrod 63 and is held against the cam by a tension spring 142. A link 143communicates motion from the lever 141 to the arm 138 to oscillate themovable section of the raceway. r

When the parts are in their initial positions as shown in Fig. 19, thetongue and groove of the coupling 134,- 135 are parallel to the dowelstuds 120. Consequently, when a raceway is being mounted on or demounted from the dowel studs by movement lengthwise of the latter, the tongue134 slides into or out of its interlocking relation in the groove in thehead 135, as the case may be, and When the raceway is caught by thelatches 121 and thereby held against the outer surface of the frame 20the pivot pins 126 and 1270f the raceway are maintained in coaxialrelation to the rock-shaft 136. "Moreover,

the dowel studs-120 maintain the tongue 134 in the groove member 135 andthus preserve the coupled relation of the raceway and the operatingmechanism.

In duplex eyeleting machines in which both eyelets of a pairare insertedby movement toward each other, it is necessary to deliver the twoeyelets in relatively reverse positions. That is, the barrels of theeyelets must be toward each other and the flanges must be away from'eachother. Moreover, when two series of eyelets are to be deliveredrespectively to the fastener-inserting devices of a duplex machine, itis desirable'to supply them under identical conditions to insure equalWith re-' gard to duplex raceways that receive'both series of eyeletsfrom a common mass stored in a hopper, equality in the feeding of thetwo series has constituted one problem, and the delivery of the eyeletsin relatively reverse positions has constituted another problem. Forexample, ins'ome prior construc tions the eyelets of one series havebeen obliged to stand with their flanges at their upper ends to be fedout of the hopper while the eyelets of the other series have beenobliged to stand with their flanges at'their lower ends to be fed out.In such cases, the

feeding conditions of the two series have been dissimilar and the 'rateof feeding has therefore been unequal.

In other prior constructions the eyelets of the two series have stood inthe same position in a common inclinedpl'ane while being fed from thehopper, but their delivery from the hopper has been at opposite sidesof- 'the axis of a rotary brush or feeding member Under these conditionsthe eyelets delivered from one side of the hopper have been propelledby. downward inclined movement of the brush into the mass of eyeletswhile those delivered from the opposite side of the hop-, per have beenpropelled by upward'inclined movement of the brush out of the mass. Hereagain, the feeding conditions have been diss'imilar and the rate offeeding has therefore been unequal.

With a view to supplying two series of eyelets under similarconditionsand with equal rates of feeding from a common mass in a hopper to aduplex raceway, the present invention provides an improvedconstructionwhich, at the same time, causes the eyelets of the two series to beequally but oppositely inclined as they pass through the outlets fromthe hopper to their respective divisionsof the raceway.

As shown in Figs; 1 and 18, the lower division 117 of the raceway is allin one inclined plane, while the movable section and the lower portionof the stationary section of the 'upper division 116 are likewise all inone inclined plane parallel to the plane of the division 117. The upperportion 145 of the division 116 and the corresponding portion of thedivision 117 diverge upwardly and are not only oppositely inclined buthave equal steepness or slant. A transverse bend 146 inthe division 116provides for the divergence and parallelism mentioned above.

The shape of the hopper 115 resembles that of a funnel although its 5mouth 147 is preferably oblong ;rather than circular. This format-ionfacilitates filling the hopper without spilling any eyelets. Its; bottomwalls148 (Fig. 24) are flat and oppositely inclined and convergedownwardly, their angles of inclination being equal. These walls arescrewed against the lower ends ofannular walls 149 by which the massedeyelets in the hopper are localized adjacent to two'feeding brushes. Thewalls 14.8 are bored to provide bearings for oppositely inclined shafts150 which extend through them. Each shaft carries a brush 151at itsinner end and a ratchet-wheel 152 at its outer end and each is providedwith an oscillatory pawl-carrier 153 loosely mounted thereon between theratchet-wheel and the adjacent wall 148. Each p awl-carrier 153,

carries an operating pawl 154 (see Fig. 23)

and a leaf-spring 155' by which the pawl is held against theratchet-wheel. The pawl is connected; to the pawl-carrier by a pivotmember 170.

The annular walls 149 of the hopper are provided with notches 156through which the barrels of the eyelets maypass, the teeth between thenotches "being spaced from' the bottom walls 148 ,s'ufliciently to clearthe flanges of the eyelets that stand with their flanged ends on thewall 148. Eachseries of notches'l56 forms communication from theinterior of the hopper to a division of the raceway (see Fig. Each .of'the connect the link 162 brushes 151 is rotated in a direction that Icauses'upward travel of the tufts as the latter sweep I the correctlypositioned eyelet through the notches or outlets 156, v the con ditionsunder which the eyelets are fed-out communicates motion through a link1159 Y to a bell-crank'lever 160. This lever is mounted on the frame 20bya fulcrum or pivot pin 161.

Two links 162 communicate theto-and-fro movements of thebell-crank ilever to the pawl-carriers 153, respectively' The pivot pins 163 bywhich these links are connected-to the bell-crank lever are located atpoints ninety degrees from each other with respect to the. axis of thefulcrum' '161, j

and the links are arranged in crossed relation so that when one of themis-being moved upwardly the other will be moved downwardly. Thus, thebrushes 151 will be operated alternately.

The upper ends of the links 162 are preferably formed toprovideforquickly attaching them to and detaching. them from the pawlcarriers sothat the operation of detaching one raceway unit and attachinganotherma-y be facilitated. I

Accordingly, each of the linksis provided with a connecting stud 164permanently affixed thereto, as shown in Fig.- 25.- The stud is providedwith a circumferential groove 165 adapted to receive the'inner'end ofadetent 166 (see Fig. 23) the detent being carried by a leaf-spring 167attached to the pawl-carrier and normally projectedinto-a socket 168formed in the pawl-carrier for the reception of the stud 164. Theleafspring 167 is extended a. short distance beyond the detent toprovide a finger-piece by "which the detent may be retracted rumma e.

the stud 164 whenever itflis desired to; disfrom the raceway'structure.v 1 j Having thus described. the invention, what I claim as new anddesire to secure by Letters Patent of the United States is:

1. A fastener-inserting machine comprisng a work-punching device'andafastenerinserting device arranged side by'side, .a

movable means by which "said devices are vided with heads against'whichsaid'surfacer member arranged to operate said devices operates and saidheads being individually adjustable to regulate the strokes imparted tosaid devices by said member, and mechan sm for lmparting operatingmovement to said member.

2. A fastener inserting machine comprising a work-punching device and afastener- I inserting device arranged side by side, a

A of said member, said devices being provided with central screw-headsagainst which said surface operates and said heads being individuallyadjustable to regulate the strokes imparted to said devices by saidmember, and mechanism for imparting operating movement to said member.

3. A fastener-inserting machine comprising two plungers arranged side byside, a punch and a fastener-inserting tool carried by said plungersrespectively, a hammer arranged to operate said plungers, screw-headsscrewed into said plungers respectively to transmit the operatingmovements of said hammer to the plungers, said screw-heads beingindividually adjustable to regulate the strokes imparted to saidplunger-s by the hammer, mechanism arranged to shift said plungerslaterallyto place said screw-heads alternately in register with a commonoperating surfaceof said hammer, and mechanism for operating said hammertwice in each cycle of operations.

4. A fastener-inserting machine comprising a work-punching device and afastener inserting device arranged side by said, an operating memberhaving a surface arranged to act on said devices alternately, movablemeans by which said devicesare shifted to place themalternately inregister with said surface, and toggle mechanism arranged to operatesaid member with strokes of unequal amplitude.

5. A fastener-inserting machine comprising a work-punching device and afastenerinserting device arranged side by side, a

hammer having an operating surface arranged to act on said devicesalternately, movable means by which said devices are shifted to placethem alternately in register with a common area of said operatingsurface, and mechanism arranged to operate said hammer with strokeshaving a common terminallimit but different starting points.

6. A fastener-inserting machine comprising a work-punching device and afastenerinserting device arranged side by side, a hammer having anoperating surface arranged to act on .saiddevices alternately,

inovable, means by which said devices are each cycle with a relativelyshort stroke one limit of retraction for the punching" device and arelatively long stroke from anshifted to place them alternately inregister withsaid operating surface, and mechanism arranged to operatesaid hammer twice in from other limit of retraction for thefastenerinserting device.

7. A fastener-inserting machine comprising a work-punching device and a-fastenerinserting device arranged side by side, a hammer having anoperating surface arranged to act on said devices alternately, movablemeans by which said devices are shifted to place them alternately inregister with said operating surface and thereafter to feed the Work,and toggle mechanism arranged to operate said hammer twice in each cyclewith a dwell of the toggle adjacent to its deadcenter position duringthe second operation in each cycle.

8. A fastener-inserting machine comprisat one side of the dead-centerposition for roperating the punching device and a relatively longdistance at the opposite side for operating the fastener-insertingdevice.

9. A fastener-inserting machine comprising a workpunching device and afastenerinserting device arranged side by side, ahammer having anoperating surface arranged to act on said devices alternately, movablemeans by which said devices are shifted to place them alternately inregister with said operating surface, a toggle arranged to operate saidhammer, and mechanism arranged to move the knee of said toggle to andfrom the dead-center position twice in each cycle first with arelatively short, operating stroke for the punching device andthereafter with a vrelatively long stroke for the fastener-insertingdevice. 7'

10. A fastener-inserting machine comprising a work-punching device and afastenerinserting device arranged side by side, a hammer for operatingsaid devices alternately, movable means by which said devices are 1shifted laterally to place-them alternately at -a,coinmon operatinglocality, a toggle arranged to operate said hammer, and mechanismarranged to move-the knee of said toggle in one direction across thedead-center position to operatethe punching device and in the oppositedirection to operate the fastener-in-e sorting device, the limits oftravel of said knee being unequally distantfrom the dead-centerposition, in consequence of which the hammer is operated with alternateshort and long strokes.

livA duplex fastener-inserting machine comprising a pair of opposedfastener-inserting devices and a pair of opposed workpunching devices,twoopposed members arranged to operate said punching devicesrespectively, a double-acting toggle arranged iis between and connectingsaid members, and mechanism arranged to operatesaid toggle.

12. A duplex fastener-inserting machine comprising a pair of opposedfastener-insertingdevices, two opposed members arranged to operate saiddevices respectively, a :doubleacti-ng toggle arranged between andconnecting said members, and mechanism arranged to operatesaid toggle.

'pn-nching devices, two opposed levers ar ranged to operate saidpunching .devicesrespectively a slide and means by which itis guided,mechanism arranged to reciprocate said slide, and toggle-linksconnecting said slide and said levers respectively to impart operatingmovements to the levers.

15. A duplex fastener-inserting .machine comprising a pair of opposedpunching de vices, a pair of opposed fastener-.insertmg devices arrangedbeside the punching devices respectively, two .opposedrhrammer-sarrangedto operate the punching devices :and the fastener-inserting devicesalternately, movable 'mea-ns by which said devices are shifted to Yplace said pairs alternatelyat a common operating locality, .adouble-acting toggle .ar ranged between and connectingsaid hammers, andmechanism arranged to operate said toggle.

16. A duplex fastener-inserting .n achine com risin a'oair ofo osedannchin' de vi'ces, a pa r of opposed iastener-inserting-devicesarranged "beside the punching devices respectively, two opp osedhammers-arranged to operate the punching devices and the iastener-inserting devices alternately, movable means by which said:devices are shifted to place said pairsalternately .at a commonoperating'locality, a double-act ng toggle arranged between andconnecting said."hammers, and mechanism arranged to operate saidtoggleby movingit back and forth, across its dead-center position.

17 A duplex iasteneninserting machine comprising a pair ofopposedpunchin g devices, a pair of opposed fastener-inserting devicesarranged beside the punching devices respectively, two opposed hammersarranged to operate the punching devices and thefastener-insertingdevices alternately, movable meansby which said devices are shifted toplacesaid pairs alternately ata common operating locality,adouble-acting toggle arranged between. and connecting said :hammers,.and mechanism arranged to operate said toggle byg'moving it, back andforth acrossits dead-center position to points -un-' equally distantfrom said position.

18. A duplex fastener-inserting m-aclii ne comprising a pair of opposedpunching devices, a pair of-opposed fastener-insert ng devices arrangedbeside the punching devices respectively, two opposed hammersarranged tooperate the punching devices and the fastener inserting devicesalternately,.

movable means by which said devices are shifted to place said pairsalternately at. a

common operating locality, a'double-acting togglearranged between andconnecting said hammers, means arranged to guide the knee of saidtoggle, and mechanism arranged to operate the toggle by reciprocatingthe knee thereof. p I v I 19. A duplexfastener-inserting machinecomprising a pair of opposed punching devices, a pair of opposedfastener-inserting devices arranged beside the punching devicesrespectively, two opposed hammers arranged to operate thepunchingdevices and the fastenerrinserting devices alternately, movablemeans by which said devices are shifted to. place said pairs alternatelyat a common operating locality, a double-actingtoggle arrangedbetweenand'connecting saidhammers, means arranged to guide the knee ofsaid toggle along a straight path, and mech- 1 anism arranged to operatethe toggle by reciprocating the knee thereof.

20. duplex fastener-inserting machine comprising a pair of opposedpunching devices, a pair of opposed fastener-inserting devices arrangedbeside the punching devices respectively, two. opposed hammers arrangedto operate the punching devices and the fastener-inserting devicesalternately, movable means by which said devices are shifted lat erallyto place said pairs alternately at a common operating locality, a double'acting toggle arranged between and connecting said hammers, a slideforming the knee of said toggle, means for guiding the sl dealong astraight path, and mechanism arranged to operate the toggle byreciprocating said slide.

21. A fastener-inserting machine comprising apunching device and afastener-insert- -1ng device arranged side by side, means by which saiddevices are shifted laterally to place them alternately at a commonoperating locality, a hammer ar ranged tooperate said devicesalternately, a toggle arranged to operate said hammer, mechanismarranged to operate said toggle by moving it to and from ts dead-centerposition twice in each cycle with a dwell adjacent to said positionbetween the start and finish ofthe second operation there'ofiandmechanism arranged to move said inserting 'device laterally during saiddwellto', iee'd'the work, said hammer having a locality, a hammerarranged to operate said devicesalternately, a toggle arranged tooperate said hammer, mechanism arranged to operate said toggle by movingit twlce across its dead-center position in each cycle with a r dwelladjacent to said position between the start and finish of its returnmovement, and mechanism arranged to feed theworlr by movingsaidfastener-inserting device laterally during said dwell, said hammerhaving a portion arranged to maintain said inserting device against aninserted fastener during said dwell. I r

23. A fastener-inserting machine comprising a hammer, mechanism arrangedto 0p crate said hammer twice in each cycle by advancing it first froman initial intermediate position to a common limit of motion, thenretracting it beyondits initial position", then advancing it a secondtime to said common limit, and thereafter retracting it to but notbeyond said initial intermediate positioma punching device and afastener-inserting device arranged side by side, means by which saiddevices are shifted laterally to place them alternately in register witha common operating portion of said hammer, means arranged to retractsaid devices, and means a1 ranged to present a fastener to said insering device.

24:. A fastener-inserting machine comprising a hammer, mechanismarranged to open said hammer twice in eachcycleby advancing it from aninitial intermediate position to a common limit of motion, thenretracting it beyond its initial position, then advancing it a secondtime to said common limit, and retracting it to an intermediate positionof dwell adjacent to said common limit, a punching device and afastener-inserting device arranged side by side, means by which saiddevices are shifted laterally to place them alternately in register witha common operating portion of said hammer, means arranged to retractsaid devices, means arranged to present a. fastener to said insertingdevice, and means arranged to impart work-feeding motion to saidfastenerinserting device while the hammer is in said intermediateposition of dwell.

25. A fastener-inserting machine comprising ahamnier, mechanism arrangedto operate said hammer twice in each cycle by advancing it first from aninitial intermediate position to a common limit of motion, thenretracting it beyond its initial; position, then advancing it a secondtime to said common limit, retracting it to an intermediate positiononly slightly distant from said common limit and maintaining adwell atthat intermediate position, and thereafter retracting it from saidposition of dwell, a punching device and a fastener-inserting1 devicearranged side by side, means by which said devices are shifted laterallyto place them alternately in coop,era-- tive relation to said hammer,means arranged .to retract said devices, work-feeding mechanism arrangedto operate by moving said in serting device laterally while the hammeris at said position of dwell, and means arranged to present a fastenerto said inserting device.

26. A fastener-inserting machine comprising a hammer, a toggle arrangedto operate said hammer, mechanism arranged to operate said toggle byshifting the lrnee thereof from an initial position at one side ofdead-center to a position at the opposite side, shifting said knee inthe opposite direction across dead-center to an intermediate positiononly slightly distant from dead-center and maintaining a dwell at saidintermediate position, and thereafter shifting the knee in said oppositedirection to its initial position, a punching device and afastener-inserting device ar ranged side by side, means by which saiddevices are shifted laterally to place them alternately in cooperativerelation to said hammer, means by which said devices are retracted,means arranged to present a fastener to said inserting device, andwork-feeding mech anism arranged to operate by moving said insertingdevice laterally while the toggle-knee is at said position of dwell.

27. A fastener-inserting machine compris ing a punching device and afastener-inserting device arranged side by side, means by which saiddevices are guided lengthwise, a reciprocatory member to which. saidguiding means is connected by a pivotal joint and by which said devicesare shifted to place them alternately at a common operating locality,work-feeding mechanism including a member movable about a fixed axiswith which the axis of said pivotal joint coincides during the feedingperiod, means forming an articulate operating connection between saidwork-feeding member and said guiding means, and mechanism by which saiddevices are operated alternately and by which saidinserting device ismaintained against a clenched fastener during the feedmg stroke impartedto said guiding means.

28. A fastener-inserting machine comprisingguidmg means, two slidesarranged in tandem relation thereon, two individual mechanisms arrangedto reciprocate said slidesrespectively, a punchingdevice and afastener-inserting device arranged side by side, means carried by one'ofsaidslides to shift said devices laterally to and from a commonoperating locality, and means oper-

